This Blog will provide information about running SAP applications on SQL Server and Windows. The Blog is written by folks of Microsoft who are working with SAP and SQL Server for more than a decade.
This blog describes how you can install the following products on SQL Server 2012
In addition, please always read SAP Note 1676665 - Setting up Microsoft SQL Server 2012 (Login required).
Some of the steps are only required if you install an SAP System that contains an ABAP stack (ABAP only or ABAP+JAVA). Those steps are marked with ABAP/ABAP+JAVA
Update: Please use the SAP Software Provisioning Manager 7.0x (70SWPM) to install SAP NetWeaver 7.0 EHP2 based products. Read SAP Note SAP Note 1680045 - Release Note for Software Provisioning Manager 1.0 (Login required) on where to download 70SWPM and this blog..
You can also copy your SAP System that is running on an older SQL Server to a machine running a new SQL Server with the following steps:
The steps for a System Copy where the source SAP system is already running on SQL 2012 are the same.